The invention provides a method for analyzing an opening field and a seepage condition of a rock fracture under different pressures. The method comprises the following steps of step 1, obtaining a splitting test sample; step 2, cutting the splitting test sample; step 3, a test sample A and a test sample B; step 4, dropping a filler onto a fracture surface of the test sample A; step 5, obtaining athree-dimensional model of the initial condition of the fracture surface when the normal pressure is F1; step 6, applying the normal pressure F1; step 7, obtaining the three-dimensional model of the initial overcurrent condition of the fracture surface when the normal pressure is F1; step 8, obtaining an opening field and the seepage condition of the fracture surface when the normal pressure is F1; and step 9, repeating the above steps 5 to 8, and obtaining the opening field and the seepage condition of the fracture surface under different normal pressures. According to the method for analyzing the opening field and the seepage condition of the rock fracture under different pressures provided by the invention, the true opening and seepage condition of a rock opening field under different pressure conditions can be better obtained.